McConnell, responding to a question regarding a call for the president’s tax returns, warned that such a move might not be a winning strategy.

“Well, you know, the whole issue of presidential harassment is interesting,” McConnell began. “I remember when we tried it in the late 90s. We impeached President Clinton, his numbers went up and ours went down. We underperformed in the next election.”

This is not the first time McConnell has warned Democrats about a possibly flawed strategy, either. When then-Senate Majority Leader Harry Reid invoked the nuclear option for judicial nominees, McConnell warned him that he would likely come to regret that decision.